B.Sc. DEGREE EXAMINATION, NOVEMBER 2017
Nautical Science
MARINE ENGINEERING AND CONTROL
SYSTEMS III
(Upto 2015 batch)
Time 3 Hours Maximum 75 Marks
Answer all questions.
x 15 75)
1. In a large two stroke propulsion engine, describe the
method of cylinder lubrication adopted. Also state
the properties of the Lube oil used for cylinder
lubrication.
What treatment the heavy fuel oil under goes prior
to its injection in the cylinder?
Or
Describe with a simple sketch, the working of a
ships windlass.
Explain the principle of working of a centrifugal
pump. What are its advantages and disadvantages
when compared with positive displacement pumps?

Sub. Code
64
CP-8022
2
Wk 3
2. With the aid of a simple sketch describe the
functioning and use of an exhaust gas turbo
charger.
Describe the process of scavenging in a two stroke
main propulsion engine.
Or
Enumerate the reasons for outbreak of a scavenge
fire. What steps are to be taken to extinguish the
fire?
In a large two stroke engine, how are main, bottom
end and cross-head bearings lubricated?
3. By means of a simple sketch explain the functioning
of a thrust block.
What is propeller slip and how is it calculated?
Or
By means of a sketch describe the functioning of a
two stage oily water separator. What is the PPM at
the outlet of each stage?
What are the criteria for safe discharge of ships
sewage disposal?
4. Describe the sensors, transmitters and transducers
in the automation chain.
How is Remote control of Rudder achieved?
Or
Explain working of a CP Propeller.
What is the use of Bow Thrusters in a ship?
CP-8022
3
Wk 3
5. Enumerate the precautions to be taken prior to
CO2 flooding of Engine room.
How is Foam generated and distributed?
Or
List all portable hand held extinguishers in a ship.
Explain their specific usage and suitability for
different classes of fires.
How are fires broadly classified?
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